CN216902898U

CN216902898U - IGBT shell mounting structure

Info

Publication number: CN216902898U
Application number: CN202123298875.9U
Authority: CN
Inventors: 周晟
Original assignee: Kunshan Xinda Accurate Component Co ltd
Current assignee: Kunshan Xinda Accurate Component Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-07-05
Anticipated expiration: 2031-12-24

Abstract

The utility model discloses an IGBT shell mounting structure, which comprises a shell, wherein a cavity is arranged in the middle of the shell, and a plurality of groups of contact pins are uniformly distributed on the top surface of the shell in an annular manner, and the IGBT shell mounting structure is characterized in that: the shell is characterized by further comprising a blocking and supporting mechanism, wherein the blocking and supporting mechanism is installed on the top surface of the shell and comprises a positioning frame and a positioning plate, a through groove is formed in the middle of the positioning frame, the positioning plate is installed on the bottom surface of the positioning frame, the positioning plate is arranged below the through groove, a plurality of groups of notches are formed in the outer edge of the top surface of the positioning frame, the bottom surface of the positioning frame abuts against the top surface of the shell, the positioning plate is inserted into the cavity, and the top of each group of contact pins penetrates through one group of notches to be arranged right above the positioning frame; the left side and the right side of the positioning frame are respectively connected with the shell through a limiting mechanism. The utility model improves the convenience of installation, disassembly and maintenance, prolongs the service life and reduces the cost.

Description

IGBT shell mounting structure

Technical Field

The utility model relates to an IGBT module, in particular to an IGBT shell mounting structure.

Background

The IGBT and the insulated gate bipolar transistor are composite fully-controlled voltage-driven power semiconductor devices composed of BJTs (bipolar transistors) and MOS (insulated gate field effect transistors), and have the advantages of both high input impedance of MOSFETs and low conduction voltage drop of GTRs.

The IGBT modules are generally mounted inside a case and then assembled using the case. In prior art, after the IGBT module is installed in the cavity of casing, utilize the bolt to support the apron that corresponds on the IGBT module under the general condition, in this kind of structure, in the follow-up needs maintenance, because operational environment and other circumstances, can appear that the bolt rusts, perhaps smooth problem of silk phenomenon, after leading to follow-up maintenance, it is inconvenient to install again, only can change the casing again, unusual inconvenient. Therefore, how to solve the above technical problems is a direction in which those skilled in the art need to take efforts.

Disclosure of Invention

The utility model aims to provide an IGBT shell mounting structure, which improves the convenience of mounting, dismounting and maintaining an IGBT shell and reduces the cost.

In order to achieve the purpose, the utility model adopts the technical scheme that: an IGBT shell mounting structure comprises a shell, wherein a cavity is arranged in the middle of the shell, two ends of the cavity are respectively communicated with the top surface and the bottom surface of the shell, a plurality of groups of contact pins are annularly and uniformly distributed on the top surface of the shell, the contact pins are arranged at the outer edge of the cavity, a plurality of groups of bending connecting pieces are arranged at the bottom of each group of contact pins, the inner ends of the bending connecting pieces are inserted into the cavity, a blocking support mechanism is further arranged, the blocking support mechanism is mounted on the top surface of the shell, and the bottom of the blocking support mechanism is arranged in the cavity;

the blocking and supporting mechanism comprises a positioning frame and a positioning plate, a through groove is formed in the middle of the positioning frame, the positioning plate is mounted on the bottom surface of the positioning frame and is arranged below the through groove, a plurality of groups of notches are formed in the outer edge of the top surface of the positioning frame, the bottom surface of the positioning frame is abutted against the top surface of the shell, the positioning plate is inserted into the cavity, and the top of each group of contact pins penetrates through one group of notches and is arranged right above the positioning frame;

the left side and the right side of the positioning frame are respectively connected with the shell through a limiting mechanism.

In the above technical scheme, the limiting mechanism includes a bottom limiting block and a top limiting block, the bottom limiting block is installed on the inner wall of the cavity, the top of the top limiting block is vertically installed on the bottom surface of the positioning plate, the top of the bottom limiting block is provided with an inward extending plate, the bottom of the top limiting block is provided with an outward extending clamping plate, the top surface of the clamping plate supports against the bottom surface of the extending plate, and the clamping plate and the extending plate limit the positioning frame to move upwards.

In the technical scheme, a top guide inclined plane is arranged on the outer side surface of the clamping plate, the top guide inclined plane is inclined downwards from outside to inside, a bottom guide inclined plane is arranged on the inner side surface of the extension plate, and the bottom guide inclined plane is parallel to the top guide inclined plane.

In the technical scheme, the middle of the bottom surface of the positioning plate is provided with a sunken lug, the middle of the top surface of the positioning plate is provided with a mounting groove, the top of the mounting groove is communicated with the through groove, and the bottom of the mounting groove is close to the bottom surface of the lug.

In the above technical solution, a support plate is provided on the inner side surface of the top stopper, and the top of the support plate abuts against the bottom surface of the bump.

In the above technical scheme, the size of lug is less than the size of locating plate, the bottom surface of lug set up in the top surface top of the connecting piece of bending.

In the technical scheme, a yielding groove is formed in the top surface of the shell and is communicated with the cavity, and the middle part of the contact pin is arranged in the yielding groove; the bottom of locating frame is blocked and is located in the groove of stepping down, the bottom surface of locating frame support in on the top surface of the groove of stepping down, just the outer fringe face of locating plate with the inner wall of cavity contacts.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

1. according to the utility model, the IGBT module is supported and positioned by the positioning plate through the positioning plate by utilizing the positioning frame and the positioning plate, and the contact pin is reinforced by utilizing the positioning frame, so that the deformation of the contact pin can be prevented, the subsequent installation and use stability is ensured, and meanwhile, the positioning frame is in clamping fit with the shell by utilizing the limiting mechanism, so that the convenience of installation and disassembly can be improved, the maintenance damage is prevented, and the cost is reduced.

Drawings

FIG. 1 is a schematic structural diagram according to a first embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view A-A of FIG. 1;

FIG. 3 is a schematic perspective view of the housing of FIG. 1 at the bottom thereof;

FIG. 4 is an exploded view of the first embodiment of the present invention;

fig. 5 is a schematic cross-sectional structure of fig. 4.

Wherein: 1. a housing; 2. a cavity; 3. inserting a pin; 4. bending the connecting piece; 5. a positioning frame; 6. positioning a plate; 7. a through groove; 8. a notch; 9. a bottom limiting block; 10. a top stop block; 11. an extension plate; 12. clamping a plate; 13. a top guide ramp; 14. a bottom guide ramp; 15. a bump; 16. mounting grooves; 17. a support plate; 18. a yielding groove.

Detailed Description

The utility model is further described with reference to the following figures and examples:

the first embodiment is as follows: referring to fig. 1-5, an IGBT housing mounting structure includes a housing 1, a cavity 2 is provided in the middle of the housing, two ends of the cavity are respectively communicated with the top surface and the bottom surface of the housing, a plurality of groups of contact pins 3 are annularly and uniformly distributed on the top surface of the housing, the contact pins are arranged at the outer edge of the cavity, a plurality of groups of bending connectors 4 are provided at the bottom of each group of contact pins, the inner ends of the bending connectors are inserted into the cavity, a blocking support mechanism is further provided, the blocking support mechanism is mounted on the top surface of the housing, and the bottom of the blocking support mechanism is arranged in the cavity;

the blocking support mechanism comprises a positioning frame 5 and a positioning plate 6, a through groove 7 is formed in the middle of the positioning frame, the positioning plate is mounted on the bottom surface of the positioning frame and arranged below the through groove, a plurality of groups of notches 8 are formed in the outer edge of the top surface of the positioning frame, the bottom surface of the positioning frame abuts against the top surface of the shell, the positioning plate is inserted into the cavity, and the top of each group of contact pins penetrates through one group of notches to be arranged right above the positioning frame;

In this embodiment, when in actual use, can install the IGBT module in the cavity to be connected with the connecting piece of bending through the connecting wire, then can block supporting mechanism and casing and be connected the installation, can utilize the locating plate to support the IGBT module like this. When the blocking support mechanism is installed, the contact pin is aligned to the notch, then the positioning frame and the positioning plate are pressed downwards, so that the contact pin penetrates through the notch to be located above the positioning frame, and the positioning plate is inserted into the cavity to support the IGBT module. Meanwhile, the positioning frame and the shell can be limited by the limiting mechanism, and the positioning frame is prevented from being separated from the shell.

Referring to fig. 2-5, the limiting mechanism includes a bottom limiting block 9 and a top limiting block 10, the bottom limiting block is mounted on the inner wall of the cavity, the top of the top limiting block is vertically mounted on the bottom surface of the positioning plate, an inwardly extending plate 11 is arranged at the top of the bottom limiting block, a clamping plate 12 extending outwards is arranged at the bottom of the top limiting block, the top surface of the clamping plate abuts against the bottom surface of the extending plate, and the clamping plate and the extending plate limit the positioning frame to move upwards.

Wherein, the casing, locating frame and locating plate are plastics and make, therefore bottom stopper and top stopper all have certain deformability, consequently, in the installation, top stopper and cardboard can be out of shape inwards, the extension board then outwards warp, after the cardboard passes through the extension board, reconversion for the cardboard is in the below of extension board, the unable up-shifting of locating frame like this, and the locating frame bottom surface supports on housing face, the unable move down of locating frame like this, play limiting displacement. When follow-up dismantlement, operating personnel grasps the cardboard, with cardboard and top stopper internal deformation, after making it break away from the extension board, with the locating frame push up, can with the casing separation, realize quick dismantlement, also can not damage.

Referring to fig. 2 to 5, a top guide inclined plane 13 is arranged on the outer side surface of the clamping plate, the top guide inclined plane is arranged from outside to inside in an inclined manner, a bottom guide inclined plane 14 is arranged on the inner side surface of the extension plate, and the bottom guide inclined plane is arranged in parallel to the top guide inclined plane.

When locating frame and casing equipment, when seeing the extension board, utilize top direction inclined plane and bottom direction inclined plane's setting and direction for the cardboard can be smooth remove the below of extension board through the extension board, the installation of being convenient for.

Referring to fig. 1-5, a sunken convex block 15 is arranged in the middle of the bottom surface of the positioning plate, an installation groove 16 is arranged in the middle of the top surface of the positioning plate, the top of the installation groove is communicated with the through groove, and the bottom of the installation groove is arranged close to the bottom surface of the convex block. The lug is located the below of mounting groove, consolidates the mounting groove, prevents its damage.

Wherein, the lug can be supported on the top surface of IGBT module, supports the IGBT module. The IGBT module is prevented from deforming, and the shell is turned over when the IGBT module is used subsequently, so that the contact pin faces downwards for subsequent installation and use. The installation groove is used for installing and yielding other parts.

Referring to fig. 2, 3 and 5, a supporting plate 17 is arranged on the inner side surface of the top limiting block, and the top of the supporting plate abuts against the bottom surface of the bump. The bottom surface of the bump is reinforced by the supporting plate, so that the bump is prevented from deforming as much as possible.

Wherein, the size of lug is less than the size of locating plate, the bottom surface of lug set up in the top surface top of bending the connecting piece.

Referring to fig. 1-5, a yielding groove 18 is arranged on the top surface of the shell, the yielding groove is communicated with the cavity, and the middle part of the contact pin is arranged in the yielding groove; the bottom of the positioning frame is clamped in the abdicating groove, the bottom surface of the positioning frame supports against the top surface of the abdicating groove, and the outer edge surface of the positioning plate is in contact with the inner wall of the cavity.

The setting of the groove of stepping down gives the locating frame and steps down, can shorten holistic thickness after casing and the equipment of locating frame like this, reduces the size of product, improves application scope, simultaneously, also can carry on spacingly to the edge of locating frame, prevents that the locating frame from giving the contact pin lateral force and making the contact pin warp.

Claims

1. The utility model provides a IGBT shell mounting structure, includes the casing, the casing middle part is equipped with a cavity, the both ends of cavity respectively with the top surface and the bottom surface of casing are linked together, the annular equipartition has the multiunit contact pin on the top surface of casing, the contact pin set up in the outer fringe department of cavity, every group the bottom of contact pin is equipped with the multiunit connecting piece of bending, the inner of the connecting piece of bending is inserted and is located in the cavity, its characterized in that: the blocking support mechanism is arranged on the top surface of the shell, and the bottom of the blocking support mechanism is arranged in the cavity;

2. The IGBT housing mounting structure according to claim 1, wherein: the limiting mechanism comprises a bottom limiting block and a top limiting block, the bottom limiting block is installed on the inner wall of the cavity, the top of the top limiting block is vertically installed on the bottom surface of the positioning plate, an inward extending plate is arranged at the top of the bottom limiting block, a clamping plate extending outwards is arranged at the bottom of the top limiting block, the top surface of the clamping plate is supported on the bottom surface of the extending plate, and the clamping plate and the extending plate limit the positioning frame to move upwards.

3. The IGBT housing mounting structure according to claim 2, wherein: the outer side face of the clamping plate is provided with a top guide inclined face, the top guide inclined face is arranged from outside to inside in an inclined mode, the inner side face of the extension plate is provided with a bottom guide inclined face, and the bottom guide inclined face is parallel to the top guide inclined face.

4. The IGBT housing mounting structure according to claim 2, wherein: the bottom surface middle part of locating plate is equipped with sunken lug, the top surface middle part of locating plate is equipped with a mounting groove, the top of mounting groove with lead to the groove and be linked together, the bottom of mounting groove is close to the bottom surface setting of lug.

5. The IGBT housing mounting structure according to claim 4, wherein: and a supporting plate is arranged on the inner side surface of the top limiting block, and the top of the supporting plate is abutted against the bottom surface of the convex block.

6. The IGBT housing mounting structure according to claim 4, wherein: the size of lug is less than the size of locating plate, the bottom surface of lug set up in the top surface top of the connecting piece of bending.

7. The IGBT housing mounting structure according to claim 1, wherein: the top surface of the shell is provided with a yielding groove, the yielding groove is communicated with the cavity, and the middle part of the contact pin is arranged in the yielding groove; the bottom of locating frame is blocked and is located in the groove of stepping down, the bottom surface of locating frame support in on the top surface of the groove of stepping down, just the outer fringe face of locating plate with the inner wall of cavity contacts.